About
In this webinar, Dr. Venkateshkumar (Venky) Prabhakaran will describe the development of scanning electrochemical microspectroscopy and its application to characterize heterogeneous electrified interfaces.

The electrode-electrolyte interface (EEI), also known as the electrified interface, is considered the heart of any electrochemical system and is relevant to various applications and phenomena, including fuel cells, batteries, and corrosion. The complexity of intertwined interfacial reactions and the heterogeneous distribution of active sites, surface defects, and particle sizes in active catalytic materials often influence chemical reactivity at EEIs. Most electrochemical techniques expose the entire surface to reactive elements at the same time, thus introducing challenges to tracking site-dependent activity. However, such local information is crucial for establishing how chemical heterogeneity affects material performance.

Visualizing the reactivity of individual EEI component using single-entity electrochemical imaging, provides an unprecedented opportunity to deconvolute the intertwined reactions that hinder a deeper understanding of critical interfacial processes. Scanning Electrochemical Cell Microscopy (SECCM) is a newly developed microscopic-scale , droplet-based, electrochemical imaging technique that captures the activity at localized or confined regions of surfaces.

Dr. Prabhakaran will discuss the distinguishing features of SECCM and his recent work employing this technique to answer challenging questions in energy- and corrosion-related applications. He will demonstrate how SECCM may be combined with microspectroscopy and electrochemical impedance spectroscopy, which ultimately enables spatially resolved correlative mapping of both electrochemical activity and the capture of transient intermediate species at functional interfaces, therby providing a powerful new methodology to characterize technologically relevant surfaces.

Key Topics:

  • Understanding the advantages and limitations of SECCM

  • Development and application of integrated scanning electrochemical cell microspectroscopy and scanning electrochemical cell impedance spectroscopy

  • Challenges and outlook for SECCM in energy and materials applications

Presenters
1603459773-325e04dd7ce525ed
InsideScientific Events Team
1711634892-ab8493dde6400f52
Venky Prabhakaran, PhD
Senior Chemical Engineer, Chemical Physics and Separations, Pacific Northwest National Laboratory
Venkateshkumar (Venky) Prabhakaran received his B. Tech. in Chemical and Electrochemical Engineering from the Central Electrochemical Research Institute in India in 2009 and his Ph.D. in Chemical Engineering from the Illinois Institute of Technology in 2014. After his postdoctoral appointment at Pacific Northwest National Laboratory (PNNL) (2014-2017), he became a research scientist in March 2017. He also holds a joint appointment as Assistant Professor in the Gene and Linda Voiland School of Chemical Engineering and Bioengineering at Washington State University, Pullman. His research interests lie at the confluence of molecular-level understanding of ionic interactions and nanoscale phenomena at electrochemical interfaces, and the rational design of efficient and sustainable electrochemical separation and energy storage systems.
Register To Watch Recording
First Name*
Last Name*
Email Address*
Organization / Company*
Job Title*
Country / Region*
Main Area(s) of Research*
Corrosion and coating protections
Nanomaterials and devices for energy conversion and storage
Electrochemical sensors, biosensors, microelectromechanical systems (MEMS)
Single-cell electroanalytical imaging and sensing
Environmental remediation via electrochemical approaches
Other:
Other area of research:
utm_bmcr_source
Do you use or would you like to incorporate ESPM (electrochemical scanning probe microscopy) techniques in your research?*
Yes, I am a current user.
Yes, I hope to use it in the future.
Not at this time.
If you have a question for Venky ahead of the webinar, please ask it here:
Registration Terms
This event is hosted by InsideScientific (a Scientist.com company). By registering and participating, you acknowledge that your personal data will be processed by the webinar platform (BigMarker), and InsideScientific. You also agree to receive email communication from InsideScientific about this webinar and other programs of similar nature. The sponsor of this webinar is Harvard Bioscience; by registering and participating, you acknowledge that your data will be processed in accordance with Harvard Bioscience's Privacy Policy. You will receive email communication from Harvard Bioscience about this webinar and programs of similar interest. You can withdraw your consent at any time from these communications.
InsideScientific Privacy Policy
✓ Yes, I consent to the registration terms.*
Harvard Bioscience Privacy Policy
✓ Yes, I consent to the registration terms.*
We use BigMarker as our webinar platform. By clicking Register, you acknowledge that the information you provide will be transferred to BigMarker processing in accordance with their Terms of Service and Privacy Policy.
Powered by BigMarker